06-09-2018, 01:16 PM
I have "Birkett" compensation on my Ulsteroid.
Essentially the brake cross shaft is located in a normal bearing on the drivers side but only extends to just beyond the longitudinal chassis member where the handbrake is located.
Where the cross shaft passes through this chassis member it runs in a slotted plate made of brass which allows the shaft to move fore and aft but not up and down.
There is then a custom brake lever mounted to the shaft at the centre just adjacent to this slotted plate which has the front brake cable attached via a clevis pin at one end and the rear brakes at the other.
When you apply the brakes the shaft turns until either the front of rear brake cable is in tension and then moves fore and aft along the slot to pull the other cable.
In this way both the front and rear brakes are fully compensating.
Not sure if this all makes sense, I could possibly do a diagram given time.
John.
Essentially the brake cross shaft is located in a normal bearing on the drivers side but only extends to just beyond the longitudinal chassis member where the handbrake is located.
Where the cross shaft passes through this chassis member it runs in a slotted plate made of brass which allows the shaft to move fore and aft but not up and down.
There is then a custom brake lever mounted to the shaft at the centre just adjacent to this slotted plate which has the front brake cable attached via a clevis pin at one end and the rear brakes at the other.
When you apply the brakes the shaft turns until either the front of rear brake cable is in tension and then moves fore and aft along the slot to pull the other cable.
In this way both the front and rear brakes are fully compensating.
Not sure if this all makes sense, I could possibly do a diagram given time.
John.